Re: Perplexing 64 addressing finding

From: Francesco Messineo <>
Date: Wed, 9 Aug 2017 21:44:22 +0200
Message-ID: <>
ALS is surely faster than LS, but I wouldn't use them in place of LS
parts, faster logic requires better decoupling (has faster edges and
larger current drive capabilities) and can disrupt any intentional
delay that was part of a design. I tend not to use a different family
when doing a repair (unless I know what I'm doing). On a new
(old-school) design, I prefer HC or AHC logic when speed isn't a
problem. AC family is very fast but requires great care in decoupling
due to the high speed toggling.

On Wed, Aug 9, 2017 at 8:23 PM, André Fachat <> wrote:
> Am 9. August 2017 3:56:40 PM schrieb Jim Brain <>:
>> Yep, but the above makes everything line up.  LS worked, wire works, but
>> HCT (being slower yet), does not.
> I have been using ALS types as LS replacements. Is that an alternative?
> Regards
> André
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Received on 2017-08-09 20:00:02

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